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/*
  Copyright 2016 Robin Gareus <robin@gareus.org>

  Permission to use, copy, modify, and/or distribute this software for any
  purpose with or without fee is hereby granted, provided that the above
  copyright notice and this permission notice appear in all copies.

  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#ifndef _ardour_lv2_extensions_h_
#define _ardour_lv2_extensions_h_

#include "lv2/lv2plug.in/ns/lv2core/lv2.h"

/**
   @defgroup inlinedisplay Inline-Display

   Support for displaying a miniaturized generic view
	 directly in the host's Mixer Window.

   @{
*/

#define LV2_INLINEDISPLAY_URI "http://harrisonconsoles.com/lv2/inlinedisplay"
#define LV2_INLINEDISPLAY_PREFIX LV2_INLINEDISPLAY_URI "#"
#define LV2_INLINEDISPLAY__interface LV2_INLINEDISPLAY_PREFIX "interface"
#define LV2_INLINEDISPLAY__queue_draw LV2_INLINEDISPLAY_PREFIX "queue_draw"

/** Opaque handle for LV2_Inline_Display::queue_draw() */
typedef void* LV2_Inline_Display_Handle;

/** raw image pixmap format is ARGB32,
 * the data pointer is owned by the plugin and must be valid
 * from the first call to render until cleanup.
 */
typedef struct {
	unsigned char *data;
	int width;
	int height;
	int stride;
} LV2_Inline_Display_Image_Surface;

/** a LV2 Feature provided by the Host to the plugin */
typedef struct {
	/** Opaque host data */
	LV2_Inline_Display_Handle handle;
	/** Request from run() that the host should call render() at a later time
	 * to update the inline display */
	void (*queue_draw)(LV2_Inline_Display_Handle handle);
} LV2_Inline_Display;

/**
 * Plugin Inline-Display Interface.
 */
typedef struct {
	/**
	 * The render method. This is called by the host in a non-realtime context,
	 * usually the main GUI thread.
	 * The data pointer is owned by the plugin and must be valid
	 * from the first call to render until cleanup.
	 *
	 * @param instance The LV2 instance
	 * @param w the max available width
	 * @param h the max available height
	 * @return pointer to a LV2_Inline_Display_Image_Surface or NULL
	 */
	LV2_Inline_Display_Image_Surface* (*render)(LV2_Handle instance, uint32_t w, uint32_t h);
} LV2_Inline_Display_Interface;

/**
   @}
*/

/**
   @defgroup automate Self-Automation

   Support for plugins to write automation data via Atom Events

   @{
*/

#define LV2_AUTOMATE_URI "http://ardour.org/lv2/automate"
#define LV2_AUTOMATE_URI_PREFIX LV2_AUTOMATE_URI "#"
/** an lv2:optionalFeature */
#define LV2_AUTOMATE_URI__can_write LV2_AUTOMATE_URI_PREFIX "canWriteAutomatation"
/** atom:supports */
#define LV2_AUTOMATE_URI__control LV2_AUTOMATE_URI_PREFIX "automationControl"
/** lv2:portProperty */
#define LV2_AUTOMATE_URI__controlled LV2_AUTOMATE_URI_PREFIX "automationControlled"
#define LV2_AUTOMATE_URI__controller LV2_AUTOMATE_URI_PREFIX "automationController"

/** atom messages */
#define LV2_AUTOMATE_URI__event LV2_AUTOMATE_URI_PREFIX "event"
#define LV2_AUTOMATE_URI__setup LV2_AUTOMATE_URI_PREFIX "setup"
#define LV2_AUTOMATE_URI__finalize LV2_AUTOMATE_URI_PREFIX "finalize"
#define LV2_AUTOMATE_URI__start LV2_AUTOMATE_URI_PREFIX "start"
#define LV2_AUTOMATE_URI__end LV2_AUTOMATE_URI_PREFIX "end"
#define LV2_AUTOMATE_URI__parameter LV2_AUTOMATE_URI_PREFIX "parameter"
#define LV2_AUTOMATE_URI__value LV2_AUTOMATE_URI_PREFIX "value"

/**
   @}
*/

/**
   @defgroup license License-Report

   Allow for commercial LV2 to report their
	 licensing status.

   @{
*/

#define LV2_PLUGINLICENSE_URI "http://harrisonconsoles.com/lv2/license"
#define LV2_PLUGINLICENSE_PREFIX LV2_PLUGINLICENSE_URI "#"
#define LV2_PLUGINLICENSE__interface LV2_PLUGINLICENSE_PREFIX "interface"

typedef struct _LV2_License_Interface {
	/* @return -1 if no license is needed; 0 if unlicensed, 1 if licensed */
	int   (*is_licensed)(LV2_Handle instance);
	/* @return a string copy of the licensee name if licensed, or NULL, the caller needs to free this */
	char* (*licensee)(LV2_Handle instance);
	/* @return a URI identifying the plugin-bundle or plugin for which a given license is valid */
	const char* (*product_uri)(LV2_Handle instance);
	/* @return human readable product name for the URI */
	const char* (*product_name)(LV2_Handle instance);
	/* @return link to website or webstore */
	const char* (*store_url)(LV2_Handle instance);
} LV2_License_Interface;

/**
   @}
*/

/**
   @defgroup plugin provided bypass

	 A port with the designation "processing#enable" must
	 control a plugin's internal bypass mode.

	 If the port value is larger than zero the plugin processes
	 normally.

	 If the port value is zero, the plugin is expected to bypass
	 all signals unmodified.

	 The plugin is responsible for providing a click-free transition
	 between the states.

	 (values less than zero are reserved for future use:
	 e.g click-free insert/removal of latent plugins.
	 Generally values <= 0 are to be treated as bypassed.)

   lv2:designation <http://ardour.org/lv2/processing#enable> ;

   @{
*/

#define LV2_PROCESSING_URI "http://ardour.org/lv2/processing"
#define LV2_PROCESSING_URI_PREFIX LV2_PROCESSING_URI "#"
#define LV2_PROCESSING_URI__enable LV2_PROCESSING_URI_PREFIX "enable"

/**
   @}
*/

#endif